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Engine-Codes - Generic - B0209

B0209 Code - Rear Blower Motor Speed Range/Performance

Repair Importance Level: 1/3
Repair Difficulty Level: 2/3  What is this?
Table of contents
What does this mean?

|B0209 code possible causes

  • Faulty Auxiliary (Rear) Blower Motor
  • Auxiliary (Rear) Blower Motor harness is open or shorted
  • Auxiliary (Rear) Blower Motor circuit poor electrical connection
  • Faulty Auxiliary Blower Motor Control Module
  • Faulty Heating, Ventilation, and Air Conditioning (HVAC)

|How is the B0209 code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the B0209 code

Labor: 1.0

The cost to diagnose the B0209 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B0209 code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What is B0209 code meaning?

The Auxiliary Blower Motor Control Module is an interface between the Heating, Ventilation, and Air Conditioning (HVAC) Control Module and the Auxiliary (Rear) Blower Motor. The auxiliary blower motor control module has 5 circuits: a B+ input, ground, a control signal from the HVAC module, a B+ output and a low side Pulse Width Modulation (PWM) control to the Auxiliary (Rear) Blower Motor. The HVAC control module provides a low side (PWM) signal to the auxiliary blower motor control module in order to request the auxiliary blower motor speed. The auxiliary blower motor control module grounds the blower motor using a low side PWM signal in order to vary the auxiliary blower motor speed.

|Need more information with the B0209 code?

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|B0209 code information for specific makes

|Need help with a B0209 code?

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